Today the developers of the tool releases new update to Windows Phone internals, the latest update enables ability to turn on Root Access in the latest Windows 10 Mobile build 10586.36.

The developers say:

Version 1.1 has a fix for the audio-issue when Root Access is enabled and it supports Root Access on the latest Windows 10 Mobile build 10.0.10586.36. It seems there were extra integrity checks for playing media. I fixed this for audio-playback. I will create a generic fix later, but this will work for now. If you already have Root Access and you experience the Audio-issue, just “Enable Root Access” again on the phone.